Add doctest for _build_env; ref #72.

jaraco · May 24, 2023 · e86b22c · e86b22c
1 parent 6c7b0de
commit e86b22c
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/pip_run/launch.py b/pip_run/launch.py
@@ -50,6 +50,12 @@ def _path_insert(previous, value):
 def _build_env(target, *, orig=os.environ):
     """
     Prepend target to PYTHONPATH and add $target/bin to PATH.
+
+    >>> import pprint
+    >>> orig = dict(PYTHONPATH='/orig', PATH='/orig')
+    >>> pprint.pprint(_build_env(pathlib.Path('/tmp/pip-run/target'), orig=orig))
+    {'PATH': '/tmp/pip-run/target/bin:/orig',
+     'PYTHONPATH': '/tmp/pip-run/target:/orig'}
     """
     overlay = dict(
         PYTHONPATH=_path_insert(orig.get('PYTHONPATH', ''), os.fspath(target)),